A&P Muscular System

Smooth muscle has the following characteristic

• striations
• involuntary action
• strong contractions
• many nuclei

Striations are responsible for the following muscle cell function:

• excitability
• multicellularity
• contraction
• homeostasis

Which ion stimulates the binding of actin to myosin?

• potassium
• calcium
• iron
• sodium

Which of the following is NOT a property of skeletal muscle?

• mostly involuntary
• striated
• multicellular
• makes up over half of the body's weight

Which of the following best describes the role of ATP energy in a muscle contraction?

• It binds actin to myosin.
• It permits inward movement of the Z-lines
• It stimulates the neurotransmitter receptor.
• It blocks the action of calcium.

Tags

NGSS.HS-LS1-7

What type of fibrous connective tissue surrounds the fascicles of muscles?

• endomysium
• perimysium
• epimysium
• famysium

The outermost layer of connective tissue of a
muscle is the:

• fascicle.
• epimysium.
• endomysium.
• perimysium.

The muscle primarily responsible for a movement
is the:

• prime mover (agonist).
• synergist.
• antagonist.
• origin.

Which muscle type is not striated?

• Skeletal
• Smooth
• Cardiac

Which muscle type is found in the heart?

• Skeletal
• Smooth
• Cardiac